ABMM Axis D tuna tuning problem

[Mattsurfer]

Hello.

I am a happy owner of a translucent orange Axis to which I can not properly install the dTuna , (either with a used one , both with a new one).
I read many threads but I have not had anything
The problem is that going from D to E is lowered the ' pitch of all the other strings of tone ¼ .
I set the bridge perfectly , matching all, blocked the bridge with a thickness , but nothing .
Only in D position the dtuna everything stays perfect.
If someone can kindly give me some advice I would be grateful , I'm going crazy ...

Thanks in advance

Mattew .

 

[dibart77]

If I understand what you're saying, when in "D-mode" everything is in tune, and then when in "E-mode" everything goes flat.

The issue is that in D-mode, there is less string tension (because the low-E string is tuned down a whole step). Since there is less string tension, the trem springs pull the trem all the way flat to the body.

When you switch to E-mode, you add more string tension (because the low-E string is tuned up a whole step to E). Apparently, when you add more string tension, the bridge is rising up slightly off the body. To confirm this: In E-mode, if you pull up on the bar do all those strings return to their proper pitch?

If so, tighten the springs in the back of the trem by giving the two screws on the spring claw a few cranks. This will make the springs pull harder so that when in E-mode, the spring tension is still greater than the string tension, and the trem will stay flat to the body.

-Jeff

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[Mattsurfer]

I tried as you said , and even adding the third spring usually results ... happens just as you said , And in pulling the bar back raises the 5 strings in tuning. at this point I think it's a problem unsolvable ...

 

[Flash Gordon]

I agree with Jeff on the above. The only thing I could add would be to make sure the bridge is level by measuring the two term height hex bolts on either side. If they are not even, this can pull one side of the bridge out of tune.

You could also try removing the D-Tuna and setting the micro tuner on your E string almost all the way down. Once you are tuned and locked... Try lowering tension to drop D tuning using the thumb screw (this is how I set mine up rather than putz around with D-tuna). If the pitch still changes, it's definitely something with your set up, not the D-tuna.

Good luck!

 

[Norrin Radd]

I guess I'm confused, does your trem float?

 

[Mattsurfer]

I tried to do with recommended by Flash And to drop D tuning using the thumb screw and actually the hue of the other rooms ropes . You post pictures of the bridge in question , which normalente works perfectly , where you may notice that on the bottom side is not perfectly parallel , but I tried in every way better than this but I can not ...I think this is the problem..

 

[Flash Gordon]

You need to raise the treble side of your bridge by about 2mm. Notice that the treble side corner sits slightly below the surface of the guitar top? Your bass side looks just about perfect.

Can you post a picture of your trem springs?

 

[Mattsurfer]

here are the pictures... the tremolo square plate does not touch anything...thanks

 

[Flash Gordon]

Looks pretty balanced in there. The only other thing I can think of would be to put a fresh set of trem springs in. If your current ones were ever removed and somehow got swapped from bass/treble sides, it can cause tuning stability issues... The springs naturally stretch out over time based on their loads.

 

[Stevie]

I can't see the bridge plate shimm, perhaps why I think the bridge is too low to the body, a dive bomb will/may put holes in your guitar top.

 

[Jamie M]

Is it me or do these D tunas seem very problematic?

 

[Flash Gordon]

Is it me or do these D tunas seem very problematic?

IMHO, They can be, but because they tend to exacerbate flaws in your set up. Without it, most people don't switch in and out of drop D tuning, so they don't find the tuning instabilities between the string tensions... So they assume their set up is good enough (and for many players, it is good enough!).

D-tuna specific issues I've encountered revolve around having to polish the action surfaces so it slides and locks properly... There are often casting blems on the action surface that cause issues.

 

[Mattsurfer]

I put the thickness under the bridge as it was when I boughta, used , consequently raising action and having to shim the neck . The only thing is that I do not like so much the detached bridge 1.5 / 2 mm ... and Dtuna continues to do the same trick , ( I think it definitely can be the springs , the guitar is the 2000 ) .just a question : but the new guitar came from the factory with the bridge with thick in the past ?

Meanwhile thank you all for your valuable advice .

Matthew